Location and Size
The Eunomia family is located between the 3:1 and 8:3 resonances with Jupiter, at relatively high inclinations.
A HCM numerical analysis by Zappalà et al. determined a large group of 'core' family members, whose proper orbital elements lie in the approximate ranges
| ap | ep | ip | |
|---|---|---|---|
| min | 2.54 AU | 0.121 | 11.6° |
| max | 2.72 AU | 0.180 | 14.8° |
At the present epoch, the range of osculating orbital elements of these core members is
| a | e | i | |
|---|---|---|---|
| min | 2.53 AU | 0.078 | 11.1° |
| max | 2.72 AU | 0.218 | 15.8° |
The Zappalà 1995 analysis found 439 core members, while a search of a recent proper element database for 96944 minor planets in 2005 yielded 4649 objects lying within the rectangular-shaped region defined by the first table above. This would give about 5% of all main belt asteroids.
Read more about this topic: Eunomia Family
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